Precision High Value Chip Resistors Type: CHM, CRM Sizes: 0805, 1206, 1210, 2010, 2512, 4020 Features: • • • • • • Meander structured High Value Chip Resistors in Thickfilm Low temperature and voltage dependency High Working Voltage up to 6000 V Suitable for high vacuum applicatons – no organics High temperature application up to 300°C possible (CHM-HT) Non-magnetic (CHM only) Contact areas: • • CHM: PtAg for conductive glueing and soldering (non-magnetic, high temp. appl.) CRM: Nickel-barrier / matte tin Dimensions: Size L B +0.15/-0.05 1.25 D +0.15/-0.05 0.40 C +0.15/-0.05 0.3 +0.2/-0.1 0805 2.00 1206 3.20 +0.15/-0.05 1.50 +0.2/-0.05 0.40 +0.15/-0.05 0.3 +0.2/-0.1 1210 3.20 +0.15/-0.05 2.50 +0.2/-0.05 0.50 +0.15/-0.05 0.8 ±0.2 2010 5,10 +0,15/-0,05 2,50 +0,2/-0,05 0,60 +0,20/-0,1 1,2 ±0,2 2512 6.30 +0.15/-0.05 3.50 +0.2/-0.05 0.60 +0.15/-0.05 0.9 ±0.2 4020 10.20 +0.20/-0.05 5.10 +0.2/-0.05 0.60 +0.20/-0.1 0.9 ±0.2 B D L C L = Length, B = Width, D = Thickness, C = Width of wrap around (in mm) Packaging: Bulk in plastic bags – minimum quantity 30 pieces per value Blistertape acc. to IEC 60286-3 – minimum 500 pieces per value Reel diameter 180 mm or 330 mm Ordering Data: Type – value – tolerance – TCR – packaging Example: CHM 2512 10G ±10% TCR 100 Tape 180 mm Not trimmed parts are indicated by the extension “NA” in the order code: Type – value – tolerance – NA – TCR - packaging Example: CHM 2512 10G ±10% NA TCR 100 Tape 180 mm If no requirements for TCR and taping are given, the highest value in table will be supplied and packaging is bulk. Standard measuring voltage is 10V, other measuring voltages on request. Specifications subject to change without notice Issue 05-2009 Willow Technologies Ltd. Unit 3 Borers Yard, Borers Arms Road, Copthorne, West Sussex, RH10 3LH, United Kingdom. + 44 (0) 1342 717102 + 44 (0) 1342 717104 [email protected] http://www.willow.co.uk Precision High Value Chip Resistors Type: CHM, CRM Sizes: 0805, 1206, 1210, 2010, 2512, 4020 Technical data – depending on size: Size Power rating P70 (mW) (P155 = 0 mW) Working voltage U_, Ueff (V) trimmed untrimmed (Tol. > 5%) 0805 1206 1210 2010 125 250 350 500 200 600 600 1000 1000 1200 1500 2000 Ranges / Tolerances / TCR 2) / VCR 3) 2512 1000 4020 1) 1500 2000 3000 1) 4000 6000 100K – 100M 0.5/1/2/5/10% TC25/50/100 50 ppm/V 0.5/1/2/5/10% TC25/50/100 50 ppm/V 0.5/1/2/5/10% TC25/50/100 25 ppm/V 0.5/1/2/5/10% TC25/50/100 25 ppm/V 0.5/1/2/5/10% TC25/50/100 10 ppm/V 0.25/ … /10% TC25/50/100 10 ppm/V >100M – 1G 2/5/10/20% TC50/100/250 250 ppm/V 2/5/10/20% TC50/100/250 100 ppm/V 1/2/5/10/20% TC25/50/100 50 ppm/V 1/2/5/10/20% TC25/50/100 50 ppm/V 1/2/5/10/20% TC25/50/100 25 ppm/V 0.5/ … /20% TC25/50/100 10 ppm/V >1G – 10G 5/10/20% TC100/250 500 ppm/V 5/10/20% TC100/250 250 ppm/V 2/5/10/20% TC50/100 100 ppm/V 2/5/10/20% TC50/100 100 ppm/V 2/5/10/20% TC50/100 100 ppm/V 1/2/5/10/20% TC50/100 25 ppm/V >10G – 100G 10/20/30% TC1000/2000 1000 ppm/V 10/20/30% TC500/1000 1000 ppm/V 5/10/20/30% TC500/1000 500 ppm/V 5/10/20/30% TC250/500 500 ppm/V 5/10/20/30% TC250/500 250 ppm/V 2/5/10/20/30% TC250/500 100 ppm/V 10/20/30% TC1000/2000 2000 ppm/V 5/10/20/30% TC1000/2000 1000 ppm/V 5/10/20/30% TC500/1000 1000 ppm/V 5/10/20/30% TC500/1000 500 ppm/V 5/10/20/30% TC500/1000 250 ppm/V 10/20/30% TCR/VCR on request 10/20/30% TCR/VCR on request >100G – 1T – >1T – 10T – – – – 1) At continuous power dissipation the dimensions of solder-pads have to secure sufficient heat-conduction TCR: in ppm/K; TCR 25/50: Temperature range +25°C...+85°C 3) VCR: typical values Lower values of tolerance, TCR and VCR on request and agreement 2) Technical data – general: Temperature range -55°C ... +155°C Climatic category acc. to EN 60068-1 55/155/56 Solderability acc. to EN 60068-2-58 (lead-free and lead-containing) 4) 250°C, 3s Max. soldering temperature acc. to EN 60068-2-58 260°C, 10s Extended temperature range up to 300°C possible- see datasheet: “High temperature chip resistors” Long term stability < 1G < 10G ≥ 10G Load Life 70°C/1000h < 0.25% < 0.5% < 1% Storage 125°C/1000h < 0.5% < 1% < 2% Max voltage/1000h < 0.5% < 1% < 2% 4) Up to 6 months after shipment; longer at storage in Nitrogen Data not specified according to EN 140401-802 (CECC 40401-802) Specifications subject to change without notice Issue 05-2009 Willow Technologies Ltd. Unit 3 Borers Yard, Borers Arms Road, Copthorne, West Sussex, RH10 3LH, United Kingdom. + 44 (0) 1342 717102 + 44 (0) 1342 717104 [email protected] http://www.willow.co.uk